core_rpc_server: add a getblock RPC command, and fix print_block

1 files changed, 60 insertions, 0 deletions

diff --git a/src/rpc/core_rpc_server.cpp b/src/rpc/core_rpc_server.cpp
index f9ff632ac..248ba17ac 100644
--- a/src/rpc/core_rpc_server.cpp
+++ b/src/rpc/core_rpc_server.cpp
@@ -772,6 +772,66 @@ namespace cryptonote
     return true;
   }
   //------------------------------------------------------------------------------------------------------------------------------
+  bool core_rpc_server::on_get_block(const COMMAND_RPC_GET_BLOCK::request& req, COMMAND_RPC_GET_BLOCK::response& res, epee::json_rpc::error& error_resp){
+    if(!check_core_busy())
+    {
+      error_resp.code = CORE_RPC_ERROR_CODE_CORE_BUSY;
+      error_resp.message = "Core is busy.";
+      return false;
+    }
+    crypto::hash block_hash;
+    if (!req.hash.empty())
+    {
+      bool hash_parsed = parse_hash256(req.hash, block_hash);
+      if(!hash_parsed)
+      {
+        error_resp.code = CORE_RPC_ERROR_CODE_WRONG_PARAM;
+        error_resp.message = "Failed to parse hex representation of block hash. Hex = " + req.hash + '.';
+        return false;
+      }
+    }
+    else
+    {
+      if(m_core.get_current_blockchain_height() <= req.height)
+      {
+        error_resp.code = CORE_RPC_ERROR_CODE_TOO_BIG_HEIGHT;
+        error_resp.message = std::string("To big height: ") + std::to_string(req.height) + ", current blockchain height = " +  std::to_string(m_core.get_current_blockchain_height());
+        return false;
+      }
+      block_hash = m_core.get_block_id_by_height(req.height);
+    }
+    block blk;
+    bool have_block = m_core.get_block_by_hash(block_hash, blk);
+    if (!have_block)
+    {
+      error_resp.code = CORE_RPC_ERROR_CODE_INTERNAL_ERROR;
+      error_resp.message = "Internal error: can't get block by hash. Hash = " + req.hash + '.';
+      return false;
+    }
+    if (blk.miner_tx.vin.front().type() != typeid(txin_gen))
+    {
+      error_resp.code = CORE_RPC_ERROR_CODE_INTERNAL_ERROR;
+      error_resp.message = "Internal error: coinbase transaction in the block has the wrong type";
+      return false;
+    }
+    uint64_t block_height = boost::get<txin_gen>(blk.miner_tx.vin.front()).height;
+    bool responce_filled = fill_block_header_responce(blk, false, block_height, block_hash, res.block_header);
+    if (!responce_filled)
+    {
+      error_resp.code = CORE_RPC_ERROR_CODE_INTERNAL_ERROR;
+      error_resp.message = "Internal error: can't produce valid response.";
+      return false;
+    }
+    for (size_t n = 0; n < blk.tx_hashes.size(); ++n)
+    {
+      res.tx_hashes.push_back(epee::string_tools::pod_to_hex(blk.tx_hashes[n]));
+    }
+    res.blob = t_serializable_object_to_blob(blk);
+    res.json = obj_to_json_str(blk);
+    res.status = CORE_RPC_STATUS_OK;
+    return true;
+  }
+  //------------------------------------------------------------------------------------------------------------------------------
   bool core_rpc_server::on_get_connections(const COMMAND_RPC_GET_CONNECTIONS::request& req, COMMAND_RPC_GET_CONNECTIONS::response& res, epee::json_rpc::error& error_resp)
   {
     if(!check_core_busy())